>> reporter: perry's exit from the race, and his endorsement, came just minutes after abc news, released an interview with gingrich's second ex-wife, mary ann. she said gingrich asked her if they could have an open marriage, so he could carry on an affair with his current wife, calista. >> i said to him, newt, we have been married a long time. and he said, yes, but you want me all to yourself. calista doesn't care what i do. >> reporter: on the campaign trail today, he refused to comment on has ex-wife. >> both of my daughters are prepared to speak on the record with any of you who would like to talk to them. several other people who knew the situation are prepared to speak on the record. i'm not getting involved. >> reporter: it's now a fight between newt gingrich and rick santorum for south carolina social conservative voters. rallying supporters here in mount pleasant, to say they like their chances in saturday's primary. sneeze doing -- >> he's doing a lot better than everyone thought he would. >> reporter: today, rick santorum, got word that he actually did better than mitt romney i